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TIL about the "Mosquito Device" a special alarm invented in 2005. The device prevents young people from gathering in public spaces by emitting a dangerously high-frequency sound that is intentionally tuned to be heard primarily by younger people.

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DQ05r TIL that Samuel L. Jackson was one of the ushers at Martin Luther King's funeral held at Morehouse College in Atlanta, Georgia after his assassination in 1968.
R5BYl TIL about Yeti Airlines Flight 691, which tragically crashed with no survivors when one pilot, while landing just a few hundred meters from the runway, mistakenly pulled the lever to feather the propellers instead of the one to increase the flap angle.
W7QEX TIL that Soviet revolutionary Leon Trotsky was not at the funeral of Vladimir Lenin, despite being among the USSR's top leadership at the time of his death. Trotsky later claimed he had deliberately been told the wrong date for the funeral.
v17kR TIL before becoming a popular "horror" author for children R.L. Stine wrote joke books, but more importantly for Bazooka Joe comics and the jokes on Bazooka bubble gum wrappers.
loXlA TIL that chili peppers are spicy as a strategy to ensure that birds (which can't taste capsaicin) will spread their seeds far and wide and mammals will avoid eating them.